From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Dmitry Gutov Newsgroups: gmane.emacs.bugs Subject: bug#38104: 27.0.50; elixir-mode fontification is very slow Date: Thu, 7 Nov 2019 17:40:11 +0200 Message-ID: <3b0bfb66-437d-3606-dc06-05957f01b516@yandex.ru> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------5D716F23368D05D3F2FC2FC5" Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="26488"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 To: 38104@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Nov 07 16:41:23 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iSjuV-0006mC-CA for geb-bug-gnu-emacs@m.gmane.org; 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X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:171087 Archived-At: This is a multi-part message in MIME format. --------------5D716F23368D05D3F2FC2FC5 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit I haven't been able to track this to a particular component (e.g. a regexp) for now, but font-lock-fontify-region is now considerably slower than it was in Emacs 26 (at least at revision cb8fb597e5bf4f14). To reproduce: install elixir-mode (e.g. from MELPA Stable): (add-to-list 'package-archives '("melpa-stable" . "https://stable.melpa.org/packages/") t) M-x list-packages, install elixir-mode. Savet the attached tiny.__ex__ as tiny.ex. Visit tiny.ex. Eval: (benchmark 1 '(font-lock-fontify-region (point-min) (point-max))). "Elapsed time: 0.158824s" With larger files, the times are much longer. I had a break from Elixir, so I noticed this only now. In GNU Emacs 27.0.50 (build 11, x86_64-pc-linux-gnu, GTK+ Version 3.24.8) of 2019-11-05 built on potemkin Repository revision: dd19cc3aa16ccc441a8a2bfcdeb3005a6eef2543 Repository branch: master Windowing system distributor 'The X.Org Foundation', version 11.0.12004000 System Description: Ubuntu 19.04 --------------5D716F23368D05D3F2FC2FC5 Content-Type: text/plain; charset=UTF-8; name="tiny.__ex__" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="tiny.__ex__" IyBtb2R1bGVfbmFtZS5leApkZWZtb2R1bGUgTW9kdWxlTmFtZSBkbwogIGRlZiBtZXNzYWdl KHt0bywgJUluY2lkZW50TWVzc2FnZXt0aXRsZTogX3QsIGJvZHk6IG1zZ319KSBkbwogICAg bXNnCiAgICB8PiBtZXNzYWdlX2JvZHkKICAgIHw+IHNlbmRfbWVzc2FnZQogIGVuZAplbmQK --------------5D716F23368D05D3F2FC2FC5--